*** how does google voice work -- problem for over a year ***

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http://forums.androidcentral.com – Ok, so i just signed up for google.com/voice#inbox and that was easy. when you click on 'call' it has 'Phone to call with' and under that it has 'google talk' or 'mobile' i tried calling jetblue 800-538-2583 when they're open with both options and neither worked -- this also happened the first time i tried it last year i thought it would just work... like skype.. or other Voips do you need a plugin or something? or do you need to download the google talk thing on windows 7?? the number attached to the google voice number is from t-mobile service if that matters thanks for you (HowTos)